Travel with Axel,
get the best price.

Washington → Louisville

Jan 21, 2027 · return Jan 31, 2027

DCA → SDF1 adulteconomyRound trip

6 flight options · 3 airlines

Nonstop flights

Thu, Jan 21 – Sun, Jan 31

American Airlines
7:27 pmDCA
1h 58m
Nonstop
9:25 pmSDF
American Airlines
11:04 amSDF
1h 39m
Nonstop
12:43 pmDCA

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 31

American Airlines
3:42 pmDCA
2h 1m
Nonstop
5:43 pmSDF
American Airlines
11:04 amSDF
1h 39m
Nonstop
12:43 pmDCA

Round-trip total · 1 adult · Taxes included

One-stop flights

Thu, Jan 21 – Sun, Jan 31

Southwest Airlines
6:05 amDCA
6h 5m
BNA · 3h 15m
12:10 pmSDF
Southwest Airlines
5:35 pmSDF
5h 20m
BNA · 2h 35m
10:55 pmDCA

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 31

Delta Air Lines
12:30 pmDCA
4h 46m
DTW · 1h 39m
5:16 pmSDF
Delta Air Lines
5:56 pmSDF
5h 3m
DTW · 2h 8m
10:59 pmDCA

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 31

American Airlines
6:17 amDCA
4h 37m
CLT · 1h 7m
10:54 amSDF
American Airlines
11:04 amSDF
1h 39m
Nonstop
12:43 pmDCA

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 31

American Airlines
4:46 pmDCA
6h 28m
PHL · 3h 2m
11:14 pmSDF
American Airlines
11:04 amSDF
1h 39m
Nonstop
12:43 pmDCA

Round-trip total · 1 adult · Taxes included

Make this trip yours

DCA ⇄ SDF

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, American Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

More dates

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-01-21 → 2027-01-31American AirlinesAA4672 / AA4718$330.002026-10-29T01:02:53Z
2027-01-21 → 2027-01-31Southwest AirlinesWN2171 + WN712 / WN1162 + WN4667$285.002026-10-29T01:02:53Z
2027-01-21 → 2027-01-31Delta Air LinesDL2476 + DL5491 / DL5451 + DL2073$320.002026-10-29T01:02:53Z
2027-01-21 → 2027-01-31American AirlinesAA5602 / AA4718$330.002026-10-29T01:02:53Z
2027-01-21 → 2027-01-31American AirlinesAA1617 + AA5479 / AA4718$317.502026-10-29T01:02:53Z
2027-01-21 → 2027-01-31American AirlinesAA5432 + AA4697 / AA4718$317.502026-10-29T01:02:53Z

2027-01-21 → 2027-01-31 · $330.00

  • American Airlines AA4672: DCA 2027-01-21 19:27:00 → SDF 2027-01-21 21:25:00; nonstop; 118 minutes. Local airport times.
  • American Airlines AA4718: SDF 2027-01-31 11:04:00 → DCA 2027-01-31 12:43:00; nonstop; 99 minutes. Local airport times.

2027-01-21 → 2027-01-31 · $285.00

  • Southwest Airlines WN2171 / WN712: DCA 2027-01-21 06:05:00 → SDF 2027-01-21 12:10:00; 1 stop(s) via BNA; 365 minutes. Local airport times.
    • WN2171: DCA 2027-01-21 06:05:00 → BNA 2027-01-21 07:00:00; layover at BNA: 195 minutes.
    • WN712: BNA 2027-01-21 10:15:00 → SDF 2027-01-21 12:10:00.
  • Southwest Airlines WN1162 / WN4667: SDF 2027-01-31 17:35:00 → DCA 2027-01-31 22:55:00; 1 stop(s) via BNA; 320 minutes. Local airport times.
    • WN1162: SDF 2027-01-31 17:35:00 → BNA 2027-01-31 17:40:00; layover at BNA: 155 minutes.
    • WN4667: BNA 2027-01-31 20:15:00 → DCA 2027-01-31 22:55:00.

2027-01-21 → 2027-01-31 · $320.00

  • Delta Air Lines DL2476 / DL5491: DCA 2027-01-21 12:30:00 → SDF 2027-01-21 17:16:00; 1 stop(s) via DTW; 286 minutes. Local airport times.
    • DL2476: DCA 2027-01-21 12:30:00 → DTW 2027-01-21 14:11:00; layover at DTW: 99 minutes.
    • DL5491: DTW 2027-01-21 15:50:00 → SDF 2027-01-21 17:16:00.
  • Delta Air Lines DL5451 / DL2073: SDF 2027-01-31 17:56:00 → DCA 2027-01-31 22:59:00; 1 stop(s) via DTW; 303 minutes. Local airport times.
    • DL5451: SDF 2027-01-31 17:56:00 → DTW 2027-01-31 19:22:00; layover at DTW: 128 minutes.
    • DL2073: DTW 2027-01-31 21:30:00 → DCA 2027-01-31 22:59:00.

2027-01-21 → 2027-01-31 · $330.00

  • American Airlines AA5602: DCA 2027-01-21 15:42:00 → SDF 2027-01-21 17:43:00; nonstop; 121 minutes. Local airport times.
  • American Airlines AA4718: SDF 2027-01-31 11:04:00 → DCA 2027-01-31 12:43:00; nonstop; 99 minutes. Local airport times.

2027-01-21 → 2027-01-31 · $317.50

  • American Airlines AA1617 / AA5479: DCA 2027-01-21 06:17:00 → SDF 2027-01-21 10:54:00; 1 stop(s) via CLT; 277 minutes. Local airport times.
    • AA1617: DCA 2027-01-21 06:17:00 → CLT 2027-01-21 07:58:00; layover at CLT: 67 minutes.
    • AA5479: CLT 2027-01-21 09:05:00 → SDF 2027-01-21 10:54:00.
  • American Airlines AA4718: SDF 2027-01-31 11:04:00 → DCA 2027-01-31 12:43:00; nonstop; 99 minutes. Local airport times.

2027-01-21 → 2027-01-31 · $317.50

  • American Airlines AA5432 / AA4697: DCA 2027-01-21 16:46:00 → SDF 2027-01-21 23:14:00; 1 stop(s) via PHL; 388 minutes. Local airport times.
    • AA5432: DCA 2027-01-21 16:46:00 → PHL 2027-01-21 17:55:00; layover at PHL: 182 minutes.
    • AA4697: PHL 2027-01-21 20:57:00 → SDF 2027-01-21 23:14:00.
  • American Airlines AA4718: SDF 2027-01-31 11:04:00 → DCA 2027-01-31 12:43:00; nonstop; 99 minutes. Local airport times.

More dates for this route